How do I set a variable to the output of a command in Bash
How do I set a variable to the output of a command in Bash Ask ion Asked 12 years 11 months ago Modified 20 days ago Viewed 2 8m times 2387 I have a pretty simple script that is something like the following bin bash VAR1 1 MOREF sudo run command against VAR1 grep name cut c7 echo MOREF
How can I assign the output of a command to a shell variable , I want to assign the result of an expression i e the output from a command to a variable and then manipulate it for example concatenate it with a string then echo it Here s what I ve got bin bash cd Desktop thefile ls t U grep m 1 Screen Shot echo Most recent screenshot is thefile But that outputs
Reading output of a command into an array in Bash
160 I need to read the output of a command in my script into an array The command is for example ps aux grep grep x and it gives the output line by line like this 10 20 30 I need to read the values from the command output into an array and then I will do some work if the size of the array is less than three arrays bash Share
Automatically Capture Output of the Last Command Into a Variable Using , By default the shell stores no information about the output of a command We can refer back to the exit code of the last command We can also run the history command to see the command lines of each operation Thus we need to run the command a certain way to capture its output 3 1 Explicitly Using Variables
Capturing multiple line output into a Bash variable
Capturing multiple line output into a Bash variable, troelskn the difference is that 1 the double quoted version of the variable preserves internal spacing of the value exactly as it is represented in the variable newlines tabs multiple blanks and all whereas 2 the unquoted version replaces each sequence of one or more blanks tabs and newlines with a single space
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How to Work with Variables in Bash How To Geek
How to Work with Variables in Bash How To Geek Variables 101 Variables are named symbols that represent either a string or numeric value When you use them in commands and expressions they are treated as if you had typed the value they hold instead of the name of the variable To create a variable you just provide a name and value for it
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This ion is more suited to Super User or to Unix Linux Try temp cpu sensors this will turn newlines to spaces though You can use grep to filter the specific info you need too Unable to assign command output to a variable 1 Get command coloured output in a variable 2 How do I assign the output of a command to a variable . To set a variable to the output of a command follow the below script bin bash setting variable current date date printing the value of the variable echo Today is current date EXPLANATION bin bash is called shebang or hashbang It indicates the interpreter to be used for executing the script in this case it s bash Here is the command and the output ps ewo pid cmd etime grep python grep v grep grep v sh 3089 python var www atm securit 37 02 17116 python var www atm securit 00 01 17119 python var www atm securit 00 01 17122 python var www atm securit 00 01 17125 python var www atm securit 00 00 Convert it into bash script snippet
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